diff --git a/recipe/bld.bat b/recipe/bld.bat
index 8a8311e..ea3565e 100644
--- a/recipe/bld.bat
+++ b/recipe/bld.bat
@@ -2,7 +2,7 @@ mkdir build_cpp
 cd build_cpp
 
 cmake %SRC_DIR% -G "NMake Makefiles" ^
-                -DCMAKE_CXX_STANDARD=17 ^
+                -DCMAKE_CXX_STANDARD=11 ^
                 -DCMAKE_PREFIX_PATH="%PREFIX%" ^
                 -DCMAKE_INSTALL_PREFIX="%LIBRARY_PREFIX%" ^
                 -DCMAKE_BUILD_TYPE=Release ^